1. Zh. S. Erzhanov and É. I. Bergman, Creep of Halite [in Russian], Nauka, Alma-Ata (1977).
2. Yu. M. Karatashov, S. A. Konstantinova, V. F. Savrasov, and B. G. Titov, “Creep and longterm strength of halite samples under complex stress state conditions,” Fiz.-tekh. Probl. Razrab. Polezn. Iskop., No. 1 (1983).
3. A. M. Gal'perin and E. M. Shafarenko, Rheologic Analysis of Mining Installations [in Russian], Nedra, Moscow (1977).
4. Yu. M. Kartashov and N. A. Nikolaichuk, “Results of investigations into the deformability of halite samples beyond the strength limit under general compression,” in: Underground Extraction of Coal [in Russian],99, Map 4/19 (1978).
5. P. Knoll, “Beitrag zum Einfluss der Zeit auf die Verformung und den Brunch von Salzgestein Freiberg,” Forschungsh. Leipzig, Ser. A, No. 528 (1973).